Create QR Codes
Enter your text. Adjust the foreground and background colors. Download the code as an SVG image. Then, print the image in a place that can be scanned with a smartphone.
How do QR Codes Work?
Someone points a compatible camera at a QR Code. Then, the camera converts the design of the QR code image to text. Often, that text is a web address (e.g., www.supertool.org). Most phone and tablet cameras these days will show the web address on a button. If a user clicks the button, then their device’s web browser will open up and go to the URL.
Uses of QR Codes
A QR Code is a form of technology and it can be put to many uses. The most common is a shortcut or link to a web address or URL. Other uses include:
- Admission control: Instead of printed paper tickets, a QR Code can be sent to a mobile device and then scanned to “check a ticket.”
- Tracing: Attaching QR labels on containers and tracking the location of the containers (kinda like a unique Bar Code). This is a form of location management and tracing.
- Coupons: Want to give a discount? Distribute a QR Code via the web and then scan it at check-out.
- All kinds of “big brother” tracking of individuals can be done. Don’t do that! Use QR Codes for good, not evil.
- Tracking inventory or assets: for example, imagine putting a QR Code on every water fountain in a school. Then, when testing the water for lead, the QR Code can be scanned to retrieve serial number-like info about the water fountain. This may reduce errors in manually writing tracking information.
- Membership cards: Include a QR Code in an app for a gym or a library. Then, just scan the QR Code in the same process you would with printed membership cards.
- Store and transmit data: Phone numbers, addresses, email addresses and anything else that is relatively short could be encoded in a QR Code.
- WiFi and network authentication: Store the network name and password for a WiFi network. When scanned, the network can be easily joined.
- Games: Imagine a real life treasure hunt that challenges players to find objects or locations with QR Codes. Proof that they’ve been found can be made via scanning a QR Code. Examples here.
- Links to app stores can be encoded.
- Linking to a website can launch an infinite number of functions on that website, so the number of uses is infinite.
Create Green QR Codes
Just select green as a foreground or background color. Simple! Or create light green, dark green, or anything in between.
Change QR Code Color?
Explore more info about how to change the color of a QR code.
Example QR Code
Point your phone’s camera at the below image as if you are going to take a photo. Your camera should recognize this as a QR code and provide a button to go to a link (the link for the below QR code is the SuperTool.org homepage). Note that your camera may struggle to read your computer monitor’s screen — try printing the QR code below and then pointing your camera at it to get the “material reality.”
When you scan a QR Code, computery folks, likely doing the work of capitalists, can collect data about you. Read more here. Also, scanning a QR Code can be a security issues. A scan can lead you to a website that engages in phishing or some other thing you probably don’t want.
Watch a short video to learn how to convert PDF colors using this tool.
Review example before and after images of the PDF color changer to see what is possible.